Power mechanism for pumping oil-wells.



No. 627,604. Patented June 27, I899.

I C. E. SUTTON.

P0W ER MECHANISM FOR PUMPING OIL WELLS.

(Application filed mi. 8, 1897.) -(No Model.) 3 Sheets-Sheet I.

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POWEB MECHANISM FOR PUMPING OIL WELLS.

(Application filed Mar. 8; 1897.)

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Patented lune 27, I899.

C. E. SUTTON.

(Application filed Mar. 8, 1897.)

POWER MECHANISM FOR PUMPING OIL WELLS.

(No Model.)

MIA/5.7555.

UNITED STATES PATENT Y OF ICE.

oHARLns-E. SUTTON, or TOLEDO, OHIO.

POWER MECHANISM FOR PUMPING OIL-WELLS.

SPECIFICATION formingpart of Letters, Patent NO. 627,604, dated June 27, 1899.

Application filed March 8, 1897 Serial No. 626,405, (No model] To all whom, it may concern:

Be it known that I, CHARLES E. SUTTON, of Toledo, county of Lucas, and State of Ohio, have invented certain new and useful Improvements in Power Mechanism for Pump ing Oil-Wells; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the numerals of reference-marked thereon, which form part of thisspecification.

This invention relates to a power mechanism for pumping oil-wells of that class wherein a number of wells are operated or pumped from a single power mechanism and the objects of the invention are to simplifythe several parts of the power mechanism and to arrange the same to provide for an even and bars of the pitmen in engagement therewith.

Fig. 4 is a side elevation of one of the pitma'narms, showing in dotted lines the conditions inverted. Fig. 5 is a centralvertical section through the semirevoluble wheel, showing its axial foundation and the antifriction-bearing supports, together with the quadrant-rack bars and pitmaiirack-bar guides. Fig. 6

shows a modified constructionin which the pitmen are shortened in their connect-ion with the rack-bar and driven by a link-motion.

with by means of a clutch 8, controlled by a bearing portion of the wheel 19.

lover 9 and normally held in engagement with the friction-surface 10 of gear 6. Upon shaft 7 is secured a pinion 11, engaging with a gear 12, mounted upon a shaft 13, having crankarms 14 upon each end of the said shaft. To crank-arms 14 are pivoted pitmen 15, connected at their outer ends with rack-bars 16. Rack-bars 16 mesh with toothed segments 18,'secured in diametric relation upon a pitman-wheel 19, to which are attached a plurality of pitman-arms 20, by which pitmen 21 may be connected by means of straps 22, engaging upon either an' outer pivot 23 for a long stroke or inner pitmen 24 for a shorter stroke.

So far as described it will be'observed that power being transmitted to pinion 5-by means of the engine gear 6 is revolved, and consequently pinion 11 and gear 12, thereby revolving shaft 13 and communicating a reciprocatory motion to the pitmen 15 and rack-bars 16,.with the elfect of imparting a semirevolution to wheel .19 and consequently a reciprocating motion to pitmen 21, connected with the pumps. Arms 20, as shown in Fig. 4, are formed with aportion 26 joining the parallel horizontal portions 25 and 27, whereby thearms are reversible-that is to say, the portion 26 may incline upward, as shown in full lines, or may be reversed, as shownin dotted lines. engage with the toothed segments by means of a casting 28, formed integral with a baseplate 29 and an inwardly-projecting horizontal plate 30, .upon which the rack-bar rests, there being a plate 31 secured to the casting 28 at its top. Wheel 19 is supported, preferably, upon four antifriction rollers 32, formed with inclined peripheries to correspond with an inclined face of the under side Wheel 19 is preferably formed upon a conical bearing 33, upon which a conical shell 34 rests, and is held in position by means of a threaded rod 35, extending axially through the same. In some instances it may be desirable to give accelerated speed to the engine prior to coupling with the pitman-wheel 19, as in the event of heavy producing wells. In this instance the clutch 8, which is normallyin engagement with gear-wheel 6, thereby causing it to move in unison with shaft 7, is with- The rack-bar is housed, and caused to drawn from the friction-surface 10 of wheel 6, thereby allowing great momentum to be obtained before throwing it again into engagement.

In some instances it is desirable to couple the power in close relation with the pitmanwheel 19. I have therefore provided a linkmovement directly attachable to cranks 14, comprising the link 36, in which the crankarm travels, thereby imparting a reciprocatory movement to the rack-bar 16 direct.

Ihave found in practice that a square follower 37in the link 36 presents a greater bearing-surface and is conducive to longer wear of the bearing, and therefore obviates a tendency to lost motion heretofore formed in a round bearing.

WVhat I claim is Means for pumping oil-wells comprising a base having an annular upwardly-projecting bearing near one end and in its transverse center, antifriction-rollers journaled in bearings secured to the base, a pitman-wheel journaled upon the upwardly-projecting bearing and resting upon the antifriction-rollers at a point near its periphery, housings carried by the base upon each side thereof, rack-bars arranged in the housings, means for reciprocating the rack-bars, toothed segments carried by the pitman-wheel with which the rackbars mesh, arms secured to and projecting radially from the pitman-wheel, and pitmen connecting the outer end of said arms and the pumping mechanism of oil-wells.

In testimony that I claim the foregoing as my own I hereby affix my signature in presence of two witnesses.

CHARLES E. SUTTON.

Witnesses:

WILLIAM WEBSTER, MAUI) SCHUMACHER. 

